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  public WildcardTermEnum(IndexReader reader, Term term) throws IOException {    super();    searchTerm = term;    field = searchTerm.field();    text = searchTerm.text();    int sidx = text.indexOf(WILDCARD_STRING);    int cidx = text.indexOf(WILDCARD_CHAR);    int idx = sidx;    if (idx == -1) {      idx = cidx;    }    else if (cidx >= 0) {      idx = Math.min(idx, cidx);    }    pre = searchTerm.text().substring(0,idx);    preLen = pre.length();    text = text.substring(preLen);    setEnum(reader.terms(new Term(searchTerm.field(), pre)));  }